How would you represent a Rubik's Cube in code?

Question

If you were developing software to solve a Rubik\'s Cube, how would you represent the cube?

Answer 1

An interesting method to represent the cube is used by the software "Cube Explorer". Using a lot of clever maths that method can represent the cube using only 5 integers. The author explains the maths behind his program on his website. According to the author the representation is suited to implement fast solvers.